Grease demonstrating device



Nov. 12,1940. s 2,221,731

GREASE DEMONSTRATING DEVICE Filed March 21, 193B 2 Shee ts-Sheet 1 INVENTOR,

.BY I

' ATTORN Y Nov. 12, 1940. ess 2,221,731

GREA$E DEMONSTRATING DEVICE Filed March 21, 1938 2 Sheets-Sheet z INVENTOR ATTORN Y Patented Nov. 12, 1940 UiTED STATES TENr GREASE DEMONSTRATING DEVICE Application March 21, 1938, Serial No. 197,045

'7 Claims.

My invention relates to a grease demonstrating device and more particularly a device for demonstrating the coherency and adherency of grease.

Some greases exhibit more strongly than others the ability to adhere to metal. Some greases are sufficiently coherent sothat, if a small quantity of grease is placed between the fingers and the fingers moved apart, the grease will string out or neck. This necking quality of a grease makes it valuable for use under conditions of shock loading or where considerable vibration is encountered.

One object of my invention is to provide a device for demonstrating greases.

Another object of my invention is to provide a device for demonstrating the coherency of a grease.

Other and further objects of my invention will appear from the following description. In the accompanying drawings which form part of the instant specification and are to be read in conjunction therewith and in which like reference numerals are used to indicate like parts in the various views:

Figure 1 is a plan view of a grease demonstrating apparatus according to my invention, with parts of the cover of the assembly broken away.

Figure 2 is an elevation of a grease demonstrating device according to my invention, with the cover removed.

Figure 3 is a sectional view, taken on a line 33 of Figure 1.

Figure 4 is a sectional view taken on a line 44 of Figure 1.

Figure 5 is a sectional view taken on a line 55 of Figure 1.

Figure 6 is a sectional view taken on a line 6-6 of Figure 1.

More particularly referring now to the drawings, a base board I is mounted upon a cuplike bottom member 2, and supports the assembly. A pair of side members 3 and 4 are held in spaced position by a plurality of pins 5, 6, l, and 9. These pins pass through suitable openings formed in the side members 3 and 4 and are secured thereto in any suitable manner, such as upsetting the projecting ends toform heads. Around each pin I place a bushing l0, adapted to hold the side members 3 and 4 in predetermined spaced relation. An arm I is pivoted between the side members 3 and 4, around a pair of pivots 8. Secured to the arm is a saddle I2, adapted to coact with an anvil l3. The anvil I3 is supported in pin 6. A projection I4 is se- 7 as can readily be seen by reference to Figure 4.

Through suitable openings in pins 5 and 9 I pass 5 bolts l6 and i1. These bolts pass through the base block I into a securing strip It, as can readily be seen by reference to Figure 3. One end of the spring 19 is secured to a bent portion 20 of the strip I8. The spring |9 passes through a suitable opening 2| formed in the base block I and is secured at its other end to a pin 22 carried by flanges 30 of arm II, the arrangement being such that the spring I9 will bias the arm ll to the position shown in full lines in Figure 3. A fairing 23 passes between the members 3 and 4 to prevent dust and grease from lodging therebetween Where it will be difficult to remove it.

On each side of the anvil I mount glass plates 24 and 25. These plates are secured by posts '20 23, 2i, 28 and 29, which may be tubes provided with slotted portions adapted to receive the glass.

Mounted for lateral motion in the side members 3 and 4 is a pin 3|, urged to the right as viewed in Figure 5 by a spring 32. The outer end of pin 3! is formed with a. head 33, the inner surface of which normally rides on the outer surface of the left hand fiange 30 as viewed in Figure 5. This flange is provided with a notch 34, readily apparent in Figure 3. g

The outer end of arm II is provided with a handle member 35 by which an operator may swing the arm around its pivots 8. When the arm reaches the dotted line position shown in Figure 3, the notch 34 in flange 30 is opposite the head 33 of pin 3| permitting the spring 32 to move the head 33 into the notch 34. This looks the arm H in the dotted line position shown in Figure 3, against the action of spring l9.

The other end of pin 3| is provided with another head 36 between which and the side member 3 the spring acts.

In use, a small quantity of a grease sample, which may be taken from containers 37, 38, 39, 4a, or 4|, is placed upon the anvil l3. The head 36 is then pressed, moving the pin 3| to the left as viewed in Figure 5, against the action of spring 32, moving the locking head 33 past the notch 34, thus permitting the spring l9 to rotate the arm I! with considerable force, causing the saddle l2 to slap violently against the anvil l3. This action tends to splatter the grease placed upon the anvil.

With an inferior grease, the action will cause the grease to splatter outwardly against the glass plates 24. If the grease is of good quality, that is, if it has the necking quality above mentioned and is sufficiently adhesive, it will stick to the anvil under the test and will not splatter outwardly against the glass plates 24.

Wiping cloths are housed Within a container 42. A cover member 43, provided with a handle M, is adapted to fit over the assembly. A pair of pins and 46 are secured to one side of the base block I. The cover 43 is provided with openings adapted to hook over the pins 46 and A5. The other side of the cover member is latched in place by means of a latch 41.

It will be readily observed that I have accomplished the objects of my invention. I have provided a novel demonstrating apparatus adapted to test the necking or cohesive properties of greases. A grease, for example, used to lubricate shackle bolts and other points subjected to shock loading or vibratory conditions, should have this necking quality to a marked degree so as to stay in place under severe pounding.

It will be observed that the anvil is curved and the saddle I2 is curved. This represents conditions in the case of a shackle bolt and its bearing.

If desired, a fiat anvil and hammer may be employed.

Various changes may be made in details within the scope of my claims Without departing from the spirit of my invention. It is, therefore, to be understood that my invention is not to be limited to the specific details shown and described.

Having thus described my invention, what I claim is:

1. In a grease demonstrating device, a base, a frame secured to said base, an arm pivoted to said frame, an anvil having an extended surface carried by said frame, a hammer carried by said arm, said hammer having an extended surface adapted to coact with said anvil surface, a spring for biasing said arm around its pivot to hold said hammer in contact with said anvil, a flange carried by said arm, a notch formed in said flange, a pin movable in said frame for movement into and out of said notch, the construction being such that said arm and hammer may be lifted against the action of said spring and held in lifted position by movement of said pin into said notch and said arm may be released by movement of said pin out of said 5 notch.

2. In a grease demonstrating device, a base, a frame secured to said base, an arm pivoted to said frame, an anvil having an extended surface carried by said frame, a hammer carried 10 by said arm, said hammer having an extended surface adapted to coact with said anvil surface, a spring for biasing said arm around its pivot to hold said hammer in contact with said anvil, readily releasable coacting means car- 15 ried by said arm and said frame for holding said hammer in position away from said anvil against the action of said spring.

3. A grease demonstrating device as in claim 2 including means for removably mounting said said anvil surface adapted to impinge grease 3 to .be demonstrated, placed on the anvil.

6. In a device for demonstrating the coherent properties of grease, an anvil having a curved surface, a pivotally mounted hammer means having a curved surface conforming with said 35 anvil surface adapted to impinge grease to be demonstrated, placed on the anvil, and vertical glass pieces mounted adjacent said anvil to act as grease catchers.

7. In a grease demonstrating device, a framef4 an arm pivotally mounted on said frame, an anvil having a curved surface, a hammer having a curved surface corresponding to said anvil surface carried by said arm adapted to impinge upon said anvil, and a spring for urging said arm to 45 hammer impinging position.

GEORGE D. BIGGS. 

